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Weather & Climate in Aoki, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Aoki experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 28°F in January while summers reach 71°F in July. The area gets 253 sunny days per year, above the national average. Annual precipitation totals 45.6 inches. The area receives 7.9 inches of snow annually. The city sits at an elevation of 1,808 feet.
Temperature
28°F Jan (-2°C)
71°F Jul (22°C)
| Annual Average | 49.7°F |
| 8% below US avg | |
| January Average | 28°F (-2°C) |
| July Average | 71°F (22°C) |
| Sunny Days | 253 days/yr |
Geography
| Elevation | 1,808 ft (551 m) |
| Area | 22.0 sq mi (57.1 km²) |
| Population Density | 187/sq mi |
| Coordinates | 36.3687°N, 138.1257°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
694 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.5.
| Jan 1, 2024 | 2024 Noto Peninsula, Japan Earthquake | M7.5 | 146 km | 10 km |
| Jul 16, 2007 | 20 km NNW of Kashiwazaki, Japan | M6.6 | 133 km | 12 km |
| Mar 11, 2011 | 13 km E of Arai, Japan | M6.2 | 75 km | 9 km |
| Jan 1, 2024 | 8 km SW of Anamizu, Japan | M6.2 | 147 km | 10 km |
| Mar 15, 2011 | 6 km NNW of Fujinomiya, Japan | M6.0 | 129 km | 9 km |
| Jan 1, 2024 | 42 km NE of Anamizu, Japan | M5.8 | 147 km | 10 km |
| Apr 16, 2011 | 6 km ENE of Tanuma, Japan | M5.8 | 137 km | 77 km |
| Feb 25, 2013 | 29 km NE of Numata, Japan | M5.8 | 113 km | 10 km |
| Jun 2, 2024 | 40 km NE of Anamizu, Japan | M5.7 | 142 km | 9 km |
| Mar 11, 2011 | eastern Honshu, Japan | M5.7 | 66 km | 12 km |
| Jul 16, 2007 | 16 km NNW of Kashiwazaki, Japan | M5.7 | 130 km | 15 km |
| May 5, 2023 | 43 km NE of Anamizu, Japan | M5.6 | 146 km | 10 km |
| Jan 1, 2024 | 54 km NE of Anamizu, Japan | M5.6 | 143 km | 10 km |
| Mar 6, 1996 | 13 km NNE of Gotenba, Japan | M5.6 | 130 km | 33 km |
| Apr 11, 2011 | 8 km WSW of Iiyama, Japan | M5.5 | 51 km | 17 km |
| Jan 1, 2024 | 56 km NE of Anamizu, Japan | M5.5 | 144 km | 10 km |
| Aug 15, 1998 | 22 km WSW of Hotaka, Japan | M5.5 | 45 km | 10 km |
| Feb 15, 2005 | 2 km NNW of Iwatsuki, Japan | M5.5 | 147 km | 46 km |
| Mar 15, 2012 | 3 km ENE of ?me, Japan | M5.5 | 121 km | 104 km |
| Aug 26, 2010 | 25 km ENE of Katsuyama, Japan | M5.4 | 125 km | 278 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
31 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 3.
| Year | Name | Category | Max Wind | Closest |
| 2019 | Faxai | Category 3 | 98 mph | 185 km |
| 2019 | Hagibis | Category 2 | 92 mph | 143 km |
| 2018 | Jebi | Category 2 | 98 mph | 171 km |
| 2018 | Jongdari | Category 1 | 81 mph | 228 km |
| 2016 | Mindulle | Category 1 | 75 mph | 262 km |
| 2014 | Phanfone | Category 1 | 81 mph | 165 km |
| 2011 | Roke | Category 2 | 92 mph | 110 km |
| 2009 | Melor | Category 1 | 86 mph | 298 km |
| 2007 | Fitow | Category 1 | 81 mph | 129 km |
| 2005 | Mawar | Category 2 | 81 mph | 188 km |
| 2004 | Ma-on | Category 3 | 92 mph | 168 km |
| 2004 | Chaba | Category 1 | 69 mph | 216 km |
| 2003 | Etau | Category 1 | 58 mph | 193 km |
| 2002 | Higos | Category 2 | 86 mph | 168 km |
| 2001 | Danas | Category 1 | 81 mph | 172 km |
| 2000 | Kirogi | Category 1 | 86 mph | 261 km |
| 1998 | Vicki | Category 2 | 86 mph | 67 km |
| 1998 | Zeb | Category 1 | 58 mph | 218 km |
| 1998 | Stella | Category 1 | 69 mph | 142 km |
| 1996 | Violet | Category 1 | 81 mph | 293 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tsunami History
12 tsunamis recorded within 500 km. Highest wave on record: 11.3 m (37 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 2024 | HONSHU: W COAST | Eruption + Earthquake | 11.3 m | 549 | 146 km |
| 1987 | HONSHU ISLAND | Earthquake | 0.2 m | - | 122 km |
| 2023 | NOTO PENINSULA, JAPAN | Earthquake | 0.1 m | 1 | 149 km |
| 2007 | HONSHU: W COAST | Earthquake | - | 15 | 137 km |
| 1892 | SW. HONSHU ISLAND | Earthquake | - | 1 | 138 km |
| 1802 | NW. HONSHU ISLAND | Earthquake | - | 19 | 149 km |
| 1799 | SW. HONSHU ISLAND | Earthquake | - | - | 139 km |
| 1751 | NW. HONSHU ISLAND | Eruption + Earthquake | - | 2,100 | 93 km |
| 1614 | NIIGATA PREFECTURE | Earthquake | - | - | 126 km |
| 1448 | SADO, JAPAN | Earthquake | - | - | 126 km |
| 887 | NIIGATA | Earthquake | - | 2,000 | 126 km |
| 863 | NW. HONSHU ISLAND | Eruption + Earthquake | - | - | 82 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
15 volcanoes within 200 km. Closest: Yokodake (36 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Yokodake | Stratovolcano(es) | 2,480 m (8,136 ft) | 1200 | 36 km |
| Asamayama | Complex | 2,568 m (8,425 ft) | 2019 | 36 km |
| Kusatsu-Shiranesan | Stratovolcano(es) | 2,165 m (7,103 ft) | 2018 | 45 km |
| Washiba-Kumonotaira | Shield(s) | 2,924 m (9,593 ft) | Unknown | 48 km |
| Shiga | Shield(s) | 2,041 m (6,696 ft) | Unknown | 50 km |
| Yakedake | Stratovolcano(es) | 2,455 m (8,054 ft) | 1995 | 51 km |
| Midagahara | Stratovolcano | 2,621 m (8,599 ft) | 1839 | 53 km |
| Myokosan | Stratovolcano | 2,454 m (8,051 ft) | -750 | 58 km |
| Norikuradake | Stratovolcano(es) | 3,026 m (9,928 ft) | -50 | 59 km |
| Niigata-Yakeyama | Lava dome | 2,400 m (7,874 ft) | 1998 | 62 km |
| Harunasan | Stratovolcano | 1,449 m (4,754 ft) | 550 | 66 km |
| Ontakesan | Complex | 3,067 m (10,062 ft) | 2014 | 79 km |
| Akagisan | Stratovolcano | 1,828 m (5,997 ft) | Unknown | 98 km |
| Nikko-Shiranesan | Shield | 2,578 m (8,458 ft) | 1952 | 122 km |
| Hiuchigatake | Stratovolcano | 2,356 m (7,730 ft) | 1544 | 122 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 28°F (-2°C) | 1.7 in | Coldest |
| February | 29°F (-2°C) | 2.0 in | |
| March | 35°F (2°C) | 2.9 in | |
| April | 47°F (9°C) | 3.4 in | |
| May | 57°F (14°C) | 3.9 in | |
| June | 64°F (18°C) | 6.3 in | |
| July | 71°F (22°C) | 6.2 in | |
| August | 73°F (23°C) | 4.8 in | Warmest |
| September | 65°F (18°C) | 6.7 in | Wettest |
| October | 53°F (12°C) | 4.0 in | |
| November | 43°F (6°C) | 2.3 in | |
| December | 34°F (1°C) | 1.4 in | Driest |
Aoki has a seasonal temperature swing of 45°F / from 28°F in January to 73°F in August. Total annual precipitation is 45.6 inches, with September being the wettest month (6.7") and December the driest (1.4").